[PATCH] mlxsw: core_env: Fix stack info leak in mlxsw_env_linecard_modules_power_mode_apply

[Miaoqian Lin]

The extack was declared on the stack without initialization.
If mlxsw_env_set_module_power_mode_apply() fails to set extack,
accessing extack._msg could leak information.

Fixes: 06a0fc43bb10 ("mlxsw: core_env: Add interfaces for line card initialization and de-initialization")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlxsw/core_env.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_env.c b/drivers/net/ethernet/mellanox/mlxsw/core_env.c
index 294e758f1067..38941c1c35d3 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core_env.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core_env.c
@@ -1332,7 +1332,7 @@ mlxsw_env_linecard_modules_power_mode_apply(struct mlxsw_core *mlxsw_core,
 	for (i = 0; i < env->line_cards[slot_index]->module_count; i++) {
 		enum ethtool_module_power_mode_policy policy;
 		struct mlxsw_env_module_info *module_info;
-		struct netlink_ext_ack extack;
+		struct netlink_ext_ack extack = {};
 		int err;
 
 		module_info = &env->line_cards[slot_index]->module_info[i];
-- 
2.39.5 (Apple Git-154)